Adsorption and absorption chillers, such as this absorption icemaker, have been promoted as low energy, quiet, and environmentally friendly. They are popular in areas where electricity is costly, difficult to obtain, or an absolute necessity, such as in hospitals.


Adsorption chillers, which are driven by hot water instead of by large amounts of electricity, provide an energy-efficient alternative to conventional refrigeration and air conditioning. The source of the hot water may be heat that would otherwise be wasted, such as exhaust or steam from industrial processes, or it can be heat directly generated from solar panels or other devices. Since power plants and manufacturing facilities can lose more than one-half of the energy they consume to wasted heat, the use of adsorption chillers and other waste ...

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